Eli pointed out that va_arg instruction result values don't

reference the stack.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@104951 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Analysis/Lint.cpp b/lib/Analysis/Lint.cpp
index 691b934..4b9f284 100644 (file)
--- a/lib/Analysis/Lint.cpp
+++ b/lib/Analysis/Lint.cpp
@@ -232,9 +232,9 @@ void Lint::visitCallSite(CallSite CS) {
     for (CallSite::arg_iterator AI = CS.arg_begin(), AE = CS.arg_end();
          AI != AE; ++AI) {
       Value *Obj = findValue(*AI, /*OffsetOk=*/true);
-      Assert1(!isa<AllocaInst>(Obj) && !isa<VAArgInst>(Obj),
+      Assert1(!isa<AllocaInst>(Obj),
               "Undefined behavior: Call with \"tail\" keyword references "
-              "alloca or va_arg", &I);
+              "alloca", &I);
     }
 
 
@@ -323,8 +323,8 @@ void Lint::visitReturnInst(ReturnInst &I) {
 
   if (Value *V = I.getReturnValue()) {
     Value *Obj = findValue(V, /*OffsetOk=*/true);
-    Assert1(!isa<AllocaInst>(Obj) && !isa<VAArgInst>(Obj),
-            "Unusual: Returning alloca or va_arg value", &I);
+    Assert1(!isa<AllocaInst>(Obj),
+            "Unusual: Returning alloca value", &I);
   }
 }
 

diff --git a/test/Other/lint.ll b/test/Other/lint.ll
index eb6a656..1187eb7 100644 (file)
--- a/test/Other/lint.ll
+++ b/test/Other/lint.ll
@@ -87,8 +87,8 @@ block:
   unreachable
 }
 
-; CHECK: Undefined behavior: Call with "tail" keyword references alloca or va_arg
-; CHECK: Undefined behavior: Call with "tail" keyword references alloca or va_arg
+; CHECK: Undefined behavior: Call with "tail" keyword references alloca
+; CHECK: Undefined behavior: Call with "tail" keyword references alloca
 declare void @tailcallee(i8*)
 define void @use_tail(i8* %valist) {
   %t = alloca i8
@@ -98,14 +98,14 @@ define void @use_tail(i8* %valist) {
   ret void
 }
 
-; CHECK: Unusual: Returning alloca or va_arg value
+; CHECK: Unusual: Returning alloca value
 define i8* @return_local(i32 %n, i32 %m) {
   %t = alloca i8, i32 %n
   %s = getelementptr i8* %t, i32 %m
   ret i8* %s
 }
 
-; CHECK: Unusual: Returning alloca or va_arg value
+; CHECK: Unusual: Returning alloca value
 define i32* @return_obscured_local() {
 entry:
   %retval = alloca i32*